This list includes everything from the timber wolf to the whooping crane.
这个名单包括了从大灰狼到美洲鹤的所有物种。
2
Mechanical timber grab is equipped according to the characteristic of crane, which could be divided into three species, that is single rope, double rope, and four rope.
绳索式木材抓斗按起重机特性适配，常用类型有单索、双索和四索三种。
3
Brick chimney is a kind of high-rise structures. In this essay, we use the inside-timber-scaffold system as operation area and, the mast crane as means for up-and-down transport.